Which term refers to bilateral lung bases?

• A. Pleurisy
• B. bibasilar
• C. Vein
• D. SA node

Answer: (B)

Describing location in anatomy often uses basilar to refer to the base of an organ. When you want to indicate both sides, you combine bi- meaning two with basilar to get bibasilar. So bibasilar means at both lung bases, a phrase you’ll commonly see in imaging reports or notes for findings like bibasilar atelectasis or bibasilar crackles. The other terms don’t describe location: pleurisy is inflammation of the pleura, a condition, not a descriptor of where; a vein is a blood vessel; the SA node is the heart’s pacemaker.